Worst time to visit Jeju Island
Some months in Jeju Island are clearly tougher for travel — extreme heat, cold, drenching rain, or peak storm season. Here's what to skip.
Months to avoid
| Month | Why |
|---|---|
| June | very wet (14 rain days) |
| July | extremely wet (18 rain days) |
| August | extremely wet (18 rain days) |
| September | very wet (17 rain days) |
| December | very wet (14 rain days) |
What to expect in the worst months
July. 18 rain days out of 31 means roughly 58% of days see measurable rainfall — plan flexible indoor backups for every outdoor day.
August. 18 rain days out of 31 means roughly 58% of days see measurable rainfall — plan flexible indoor backups for every outdoor day.
June. 14 rain days out of 30 means roughly 47% of days see measurable rainfall — plan flexible indoor backups for every outdoor day.
Better times to go
Better months: May (21°C, 10 rain days) · October (20°C, 10 rain days)
Better in the same region in July
If you're set on Asia in July, these cities have more comfortable conditions in the same window:
If you still have to go — what to bring
- Wet: Real rain shell (not a "water-resistant" jacket), packable umbrella, dry-bag for electronics, quick-dry layers. Pre-book indoor museums and food halls.
Related Jeju Island guides
The positive counterpart: which months are great and why.